a person employed to stand at the entrance to a club, pub, etc. to stop people who are not wanted from going in, and to throw out people who are causing trouble inside （俱乐部、酒店等的）门卫 The bouncers threw him out when he became aggressive. 他开始挑衅时保安把他赶了出来。
(in cricket 板球 a ball thrown very fast that rises high after it hits the ground 弹得很高的快球 - (also bounce house)(both North American English)(British English bouncy castle)
a plastic castle or other shape that is filled with air and that children can jump and play on 充气欢乐堡（儿童游戏用的塑料城堡） an inflatable bouncer 充气蹦床